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Bijl, H.J. (author)
Self-learning controllers offer various strong benefits over conventional controllers, the most important one being their ability to adapt to unexpected circumstances. Their application is however limited, the most important reason being that, for self-learning controllers to work on continuous domains, nonlinear function approximators are...
master thesis 2012
document
Tay, W.B. (author), Bijl, H. (author), Van Oudheusden, B.W. (author)
Numerical simulations have been performed to examine the interference effects between an upstream flapping biplane airfoil arrangement and a downstream stationary tail at a Reynolds number of 1000, which is around the regime of small flapping micro aerial vehicles. The objective is to investigate the effect of the relative distance and angle of...
conference paper 2012
document
Boon, D.J. (author), Dwight, R.P. (author), Sterenborg, J.J.H.M. (author), Bijl, H. (author)
We perform a fully stochastic analysis of an experiment in aerodynamics. Given estimated uncertainties on the principle input parameters of the experiment, including uncertainties on the shape of the model, we apply uncertainty propagation methods to a suitable CFD model of the experimental setup. Thereby we predict the stochastic response of...
conference paper 2012
document
Bijl, G.B.W. (author)
The Re-Exploration Of Territory. It takes centuries for a natural landscape to be formed while it only takes decades to replace this for an urban landscape. Since the Industrial revolution mankind has found new ways to demand more and more natural territory, transforming it into human territory. Especially in areas where excessive industrial...
master thesis 2012
document
Gillebaart, T. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
In this paper, the influence of wing flexibility and the 'clap-and-peel' motion (one versus two wings) on the upward (lifting) force in hover is studied. CFD simulations based on the ALE Navier-Stokes equations together with radial basis function mesh interpolation are used. For the 'clap-and-peel' motion an immersed symmetry plane is introduced...
conference paper 2011
document
Gillebaart, T. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
In this paper, the influence of wing flexibility and the 'clap-and-peel' motion (one versus two wings) on the upward (lifting) force in hover is studied. CFD simulations based on the ALE Navier-Stokes equations together with radial basis function mesh interpolation are used. For the 'clap-and-peel' motion an immersed symmetry plane is introduced...
conference paper 2011
document
Tay, W.B. (author), Bijl, H. (author), Van Oudheusden, B.W. (author)
Numerical simulations have been performed to examine the interference effects between an upstream flapping airfoil and a downstream stationary airfoil in a tandem configuration at a Reynolds number of 1000, which is around the regime of small flapping micro aerial vehicles. The objective is to investigate the effect of the distance of the tail...
conference paper 2011
document
Tay, W.B. (author), Bijl, H. (author), Van Oudheusden, B.W. (author)
Numerical simulations have been performed to examine the interference effects between an upstream flapping airfoil and a downstream stationary airfoil in a tandem configuration at a Reynolds number of 1000, which is around the regime of small flapping micro aerial vehicles. The objective is to investigate the effect of the distance of the tail...
conference paper 2011
document
De Baar, J.H.S. (author), Dwight, R.P. (author), Bijl, H. (author)
We apply Ordinary Kriging to predict 75,000 terrain survey data from a randomly sampled subset of < 2500 observations. Since such a Kriging prediction requires a considerable amount of CPU time, we aim to reduce its computational cost. In a conventional approach, the cost of the Kriging analysis would be dominated by the optimization routine...
conference paper 2011
document
De Jong, A.T. (author), Bijl, H. (author), Scarano, F. (author)
The present investigation focuses on the aero-acoustic resonance of cavities with a width much larger than their length or depth and partially covered, as often encountered in automotive door gaps. The cavities are under influence of a low Mach number flow with a relatively thick boundary layer. Under certain conditions, these cavities can...
journal article 2011
document
Scholcz, T.P. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
High fidelity analysis of fluid-structure interaction systems is often too timeconsuming when a large number of model evaluations are required. The choice for a solution procedure depends often on the efficiency of the method and the possibility of reusing existing field solvers. Aggressive Space-Mapping, a technique originally developed for...
conference paper 2011
document
Kreeft, J.J. (author), Weghs, M. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
Two reduced order models are presented for the simulation of physically strong coupled fluid-structure interaction problem, based on computationally partitioned flow and structure solvers. The reduced order models used are a class of quasi-Newton coupling methods to obtain a stable solution and to reduce the number of subiterations. The second...
conference paper 2011
document
Sterenborg, J.J.H.M. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
In order to validate fluid-structure interaction solvers, a one degree of freedom (1 DOF) aeroelastic experiment is performed. A rigid wing with an harmonically actuated flap, is suspended by springs to allow a free heaving motion. Displacements and time dependent aerodynamic forces are measured for reduced flap frequencies ranging from k = 0.1...
conference paper 2011
document
Kazemi Kamyab, V. (author), Van Zuijlen, A.H. (author), Bijl, H. (author)
The application of higher order implicit time integration schemes to conjugate heat transfer problems is analyzed with Dirichlet-Neumann as the decomposition method. In the literature, only up to second order implicit time integration schemes have been reported while there is a potential for gaining computational efficiency using higher orders....
conference paper 2011
document
Van Zuijlen, A.H. (author), Bijl, H. (author)
Computational fluid-structure interaction is commonly performed using a partitioned approach. For strongly coupled problems sub-iterations are required, increasing computational time as flow and structure have to be resolved multiple times every time step. Reductions in computing times can be achieved by e.g. improving the convergence of the sub...
conference paper 2011
document
Bijl, E. (author)
The erosion problem at the Senegambia area (The Gambia) is the subject of this thesis. The Senegambia area is the largest Tourism developed area which contributes significantly to the economy of The Gambia. In November 2003 Royal Haskoning has constructed a beach nourishment of 1,000,000 m3 as an erosion buffer with a lifetime of 10 to 15 years....
master thesis 2011
document
De Jong, A.T. (author), Bijl, H. (author)
Cavity aeroacoustic noise is relevant for aerospace and automotive industries and widely investigated since the 1950s. Most investigations so far consider cavities where opening length and width are of similar scale. The present investigation focuses on a less investigated setup, namely cavities that resemble the door gaps of automobiles. These...
journal article 2010
document
De Jong, A.T. (author), Bijl, H. (author)
Cavity aeroacoustic noise is relevant for aerospace and automotive industries and widely investigated since the 1950’s. Most investigations so far consider cavities where opening length and width are of similar scale. The present investigation focuses on a less investigated setup, namely cavities that resemble the door gaps of automobiles. These...
conference paper 2010
document
Loeven, G.J.A. (author), Bijl, H. (author)
In this paper the Probabilistic Collocation method is used for uncertainty quantification of operational uncertainties in a transonic axial flow compressor (i.e. NASA Rotor 37). Compressor rotors are components of a gas turbine that are highly sensitive to operational and geometrical uncertainties. Validation of the Probabilistic Collocation...
conference paper 2010
document
Bijl, B. (author)
This graduation report describes the design of a new connection between watch-string and watch-casing. The project was carried out for Kedtrade, and under supervision of the Faculty of Industrial Design Engineering at the Delft University of Technology. Kedtrade sells Kyboe watches; this report is mainly based on the Giant 55 watch; a large...
master thesis 2010
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